16 FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M
Problem Cause Remedy
Cutting attachment stops when
idling, versions without M-Tronic
Idle speed too high Readjust with idle speed screw
LA (counterclockwise)
... All versions Clutch springs stretched or fatigued Replace tension springs, replace
clutch if necessary
Clutch spring hooks broken Replace tension springs
... Versions with M-Tronic Parts in carburetor or M-Tronic
wiring harness defective
Carry out M-Tronic diagnosis, if
necessary, replace carburetor or
M-Tronic wiring harness
Engine speed drops quickly under
load – low power,
all versions
Air filter dirty Clean air filter, replace if necessary
Throttle shutter not opened fully Check throttle cable and rod
Tank vent faulty Replace tank vent
Fuel pick-up body dirty Replace pickup body
Fuel strainer dirty Clean fuel strainer in carburetor,
replace if necessary
Leak in fuel line between tank and
carburetor
Seal connections or replace line
Main jet bores or ports blocked Clean the carburetor
Pump diaphragm damaged or
fatigued
Replace pump diaphragm
Incorrect ignition timing, flywheel
out of adjustment
– Key in flywheel has sheared off
Install new flywheel
... Versions without M-Tronic High speed screw H "too rich" Check basic carburetor setting,
correct if necessary
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